Who We Are

Smart Real Estate Management. Proven Results.

Since 2001, GGP Real Estate Advisors has been helping homeowners and property owners across the Metro New York area save money and make smarter real estate decisions. We specialize in property tax appeals (Tax Certiorari) and offer a full range of valuation and management services designed to protect and maximize the value of your assets.

Property taxes are based on assessed values determined by local assessors or outside “Re-Valuation” firms—many of which rely on mass appraisal models that can overlook important market details. These models often fail to capture the nuances of high-end, non-conforming, or complex properties. That’s where we come in. Using proprietary tools and decades of market expertise, our team breaks down assessment models, identifies inaccuracies, and challenges inflated valuations. With a 97% success rate, we’ve secured some of the largest assessment reductions in the region for more than two decades.

GGP is led by Jeff Jackson, a certified appraiser and pioneer in automated valuation modeling. In the early 1990s, Jeff created the first database of NYC residential properties—an innovation that became the foundation for valuation standards used by major lenders, brokerages, and law firms throughout the metropolitan area.

Today, GGP Real Estate Advisors offers services that include:

• Residential Tax Appeals — Reduce your property tax burden through expert analysis and representation.
   
• Property Management — Comprehensive, hands-on oversight for single-family homes and investment properties.
   
• Trust & Estate Valuations — Accurate, certified valuations for estate planning, gifting, and legal purposes.
   

At GGP, we combine deep local knowledge with advanced data tools to deliver smart, strategic real estate management—helping you protect what matters most: your investment.